A bill that doubled with nothing running, or a wet spot with no obvious source. We find out where the water is going before anyone opens a wall.
Water Leak Detection in Portland, OR
Most Portland leaks get found by a bill rather than by a puddle. Water travels along joists and framing and surfaces somewhere else entirely, so on the inner east side it shows up as a stain creeping down a basement foundation wall, and in the outer and post-war stock it stays under the house in a crawlspace nobody looks at until August. bluefrog Plumbing + Drain of Portland works backward from what you can see to the pipe, fitting, or valve that's actually losing water.
We find it first, price it second, and open as little of the house as the job allows.
Finding a Leak Is Its Own Job in a Portland House
Most leak advice online was written for Sun Belt markets where houses sit on a concrete slab and every story ends underneath the floor. Portland is built the other way. Across Southeast, Northeast, and North Portland the pre-1940 foursquares, Craftsman bungalows, and English cottage revivals nearly all have basements, and the outer and post-war stock mostly sits over a crawlspace. So the local version of a hidden leak is a damp foundation wall, a rust-stained joist hanger, a subfloor gone soft, or a crawlspace that never dries out when everything else has. That mostly works in your favor, because a failure that's above ground and inside the building can be found without moving any dirt.
Finding it is a sequence, and we run it in order. The meter answers whether water is leaving the system at all. A dye test in every toilet tank rules out the most common culprit in the house before anyone opens anything. Isolating sections of the supply piping answers which run is losing it. A pressure test on that run narrows it to a length of pipe. Only then does anyone cut, and in a house with lath-and-plaster walls that order matters more than it does in newer construction, because plaster doesn't patch back the way drywall does and every extra opening turns into a real cost to you later. Once we know where the leak is we can tell you what it'll take to put right, and what the repair itself involves depends on what the finding turned up.
Leak detection is one part of the supply-side work we do, and it's the part homeowners most often try to skip past. It's worth the time it takes, because a guess about the location means opening a wall that didn't need to be opened.
Signs that are worth a meter reading:
- A water bill that jumped without anything changing about how the house is used
- A damp or discolored patch on a basement foundation wall that never dries out
- A musty or earthy smell in a basement, a closet, or a crawlspace
- The sound of water running when every fixture in the house is off
- A toilet that hisses, refills on its own, or has a faint ripple moving across the bowl
- A strip of lawn or parking strip that stays green and soft through a dry August
- Hot water pressure that has fallen off on its own, or a faucet that spits air
What We Locate Ourselves, and What Goes to a Specialist
We'd rather you read this here than hear it standing in your driveway
Leaks we find and repair ourselves
Supply piping, fixture connections, angle stops and main shut-offs, hose bibs, water heater fittings and relief lines, and the runs hidden inside walls, ceilings, and floors. All of that is in-house, from the first meter reading to the last fitting. When the water turns out to be coming from the appliance rather than the pipe feeding it, that's a different job and we'll say so rather than bill you to chase a fitting, and the conversation moves to what is wrong with the tank.
Buried locating goes to a specialist
When the water is escaping under a yard, under a driveway, or under concrete, pinpointing it is a separate trade with its own equipment and its own operators, and we bring in a specialist to do exactly that. We'll get you to the point of knowing the loss is outside the building, which the meter and the main shut-off will prove in about an hour, and then the locate is theirs and the repair is ours. Owning a piece of equipment isn't the same as being good with it, and a wrong guess on a buried line means digging where the pipe isn't, which gets expensive quickly. Excavation-scope work is done with our excavation partners, under our scope and our price: we handle the diagnosis, the plan, the plumbing, and the coordination.
bluefrog Plumbing + Drain of Portland is woman-owned and LGBTQ-owned, licensed and insured in Oregon under CCB #255748, so you know who's coming into your house and how they'll behave once they're in it. We opened in 2025 with more than 1,000 completed projects behind the team, we work the city out of Richmond and Sellwood, and a great deal of this work happens in the old stock on the east side of the river, where basements and original galvanized are both the norm.
How We Narrow It Down
Three steps, in order, before anything gets opened.
Two Tests You Can Run Before You Call Anyone
First, the meter. Shut off every fixture and anything automatic: the ice maker, the humidifier, the irrigation timer. Lift the lid on the meter box out at the curb, write down the reading, and leave it alone for an hour or two. If the number moved, water is leaving the system somewhere. Now close the main shut-off where the line comes into the house and read it again. If the meter stops, the loss is inside the building and this is the right page. If it keeps creeping, the water is going into the ground out front, and that's work on the buried service line instead.
Second, the toilets, and don't skip this one. Put a few drops of food coloring in the tank, leave the handle alone, and come back in fifteen minutes. Color in the bowl means water is slipping past the flapper and running straight to the drain, around the clock, with no sound and nothing to see. It's the single most common reason a bill jumps with nothing visibly wrong anywhere in the house. We run this same dye test on every toilet in the house on a detection call, because it costs a minute and it rules out the largest suspect first.
Isolation and Pressure Testing
Knowing the loss is inside the house isn't the same as knowing where it is. So we break the system into sections at the valves, close them one at a time, and watch what the pressure does. A run that holds is a run we can stop thinking about, and a run that bleeds down is the one we work on. In a 1920s bungalow this is also where we learn how much of the original piping is still live, because the sections that got replaced during some past remodel behave nothing like the sections that didn't.
Locating It Inside a Wall or Ceiling
Water travels before it appears, so the ceiling stain is almost never directly under the failure. We use the meter, the isolation results, and the way the framing runs to put the leak in a specific bay before anyone touches a wall. Then the opening is the smallest one that reaches it, cut square so a plaster or drywall repair can close it. In a lath-and-plaster house that restraint is worth real money to you, because plaster patches show. Once the line is exposed, repairing it is usually the short part of the day.
City policy, in plain terms. Confirm the current terms with the Water Bureau before you count on anything.
The Portland Water Bureau Sometimes Adjusts a Leak Bill
If a leak has already landed on your bill, the Portland Water Bureau has a leak adjustment policy, ADM-14.03, and it's worth knowing how it works before you do anything else. As the Bureau describes it, an account can receive one adjustment in a twelve-month period for a leak that doesn't reach the sewer, such as a supply line losing water into the ground, plus a separate adjustment for a leak that does reach the sewer, the running toilet being the everyday example. It applies to leaks on your side of the meter. Water lost to theft, vandalism, or construction damage is excluded, and the Bureau has an appeal path for extraordinary circumstances.
The part that catches people is the clock. The Bureau expects you to locate the leak and start repairs within 30 days of being notified about the high usage, and to finish within 90 days. City staff verify the repair at the meter, so what an adjustment turns on is a repair that's actually finished and can be checked, rather than a leak that's been found. A permitted, documented, completed repair is the thing the city can confirm, and we write ours up so you have the dates and the scope in hand when you file.
We don't decide any of this, and nobody at bluefrog can promise you an adjustment. Policy changes, so check the current rules and deadlines with the Water Bureau directly. What we can do is get you started inside that 30-day window by telling you on day one where the water is going, and then repairing it with a paper trail.
From roughly October through May, plenty of Portland crawlspaces and basement walls are damp for reasons that have nothing to do with plumbing: surface water, grading that walks the yard toward the house, a downspout tie-in that gave out under fall leaf load in a city with this many mature trees. A wet crawlspace in February is hard to attribute, and anyone who eyeballs it and names a cause is guessing. Supply water is clean and often warm, and ground water and roof runoff are cold and dirty, so they don't read the same when you're down there looking at them. The meter settles the argument either way.
If the answer turns out to be that your problem isn't plumbing, that's what you'll hear, and the $59 pays for the plumber's time to reach that conclusion rather than sell around it. If the answer is a pinhole in one of a dozen same-age galvanized runs still in the walls, we'll tell you that too, hand you the cut section, and let you weigh a single repair against replacing the supply system. No push in either direction. We'll follow up, usually by text. If you tell us you're waiting, we'll leave it there. The rest of what we handle around the city works the same way.
Why Choose bluefrog Plumbing + Drain of Portland?
Keep Life Flowing
A Partner, Not Just a Plumber
Our licensed plumbers are here for more than a one-time fix. We take the time to understand your home, provide honest recommendations, and help prevent future issues, so you have a trusted partner you can rely on for the long term.
Trusted, Transparent Service
Clear communication, upfront pricing, and respectful, professional technicians you can feel confident inviting into your home. No surprises, just the right solution, done right.
Local Experts, You Can Count On
Locally owned and operated, backed by the standards and support of a national brand. You get responsive, personalized service from a team that knows your community, and is here for the long haul.